Objective_To identify the anti-HBV efficiency of AAV-IFNαby infecting HepG2.2.15 cell line, and to develop a new strategy of curing hepatitis B.Methods_Firstly,recombinant vector was packaged into AAV by three plasmids co-transfection method;then AAV-IFNαinfected HepG2.2.15 cell line, and samples were collected on the 1st, 3rd,6th and 9th day;thirdly, The time-course of HBV DNA,HBsAg and HBeAg were detected by qPCR and ELISA.The proliferation of HepG2.2.15 cells detected by MTT.Results_Recombinant AAV-IFNαcan significantly inhibit HBV replication and expression in vitro because of the proliferation of HepG2.2.15 cells inhibited by AAV6-IFNα( P<0.05) .Conclusions_AAV-IFNαis a potential antiviral product for hepatitis B.

[ ABSTRACT] AIM:To study the effect of rapamycin ( Rap) on the proliferation, invasion, adhesion, apoptosis and autophagy of human adenocarcinoma A549 and resistant A549/DDP cells treated with cis-diamminedichloroplatinum ( DDP) .METHODS: Human adenocarcinoma A549 and resistant A549/DDP cell lines were cultured.The inhibitory effects of Rap alone or combined with DDP on A549 and resistant A549/DDP cells were detected by MTT assay.The in vitro invasion abilities of the 2 cell lines treated with Rap alone or combined with DDP were detected by Transwell methods. The in vitro adhesion abilities of the 2 cell lines treated with Rap alone or combined with DDP were detected by adhesion experiments.The apoptosis of A549 and resistant A549/DDP cells induced by Rap alone or combined with DDP was ana-lyzed by flow cytometry.The cell autophagy marker proteins beclin-1 and LC3 in A549 and resistant A549/DDP cells trea-ted with Rap alone or combined with DDP were detected by Western blotting.RESULTS:Compared with Rap or DDP a-lone group, the combination of Rap and DDP significantly inhibited the proliferation, invasion and adhesion of A549 and resistant A549/DDP cells in vitro, and promoted the cell apoptosis and autophagy marker proteins beclin-1 and LC3 expres-sion ( all P<0.05) .CONCLUSION:Rap enhances the effect of DDP through promoting the cell autophagy, thereby in-hibiting the proliferation, invasion and adhesion of A549 and resistant A549/DDP cells and inducing the cell apoptosis with a synergistic effect.

Objective To explore the application of ultrasonography (US) 5-grade system in the diagnosis of nasopharyngeal carcinoma(NPC).Methods A total of 150 patients suspected of having NPC underwent ukrasonography and MR imaging.All the lesions were scored according to the two different methods.Pathological results were made the golden criteria.The diagnosis accuracy of ultrasonography and MR imaging for NPC was evaluated using receiver-operating curve (ROC) analysis by Medcalc software.Results Both ultrasonography and MR imaging exhibited a good diagnostic performance for NPC with area under the curve (AUC) values of 0.958 and 0.987,respectively.The AUC difference of the two methods were statistically significant(Z =2.827,P =0.005).Conclusions Ultrasonography 5-grade system was an initial quantitative criterion for nasopharyngeal carcinoma diagnosis.The diagnosis accuracy was high although lower than MRI.But it could provide an overall economical and convenient complementary technique for clinical diagnosis.

Objective To study the dynamic changes of DNA content of the fibroblasts in narrow pedicle subdermal vascular network flap (SVNP) during their surviving. Methods Eighteen pieces of surviving skin in pig back with size of 16 cm?8 cm and pedicle wideness of 4 cm were stained with acridine orange, and their DNA contents were measured with the adherent cell analysis and sorting cytometer 570. The tissue samples were taken at 3, 4 ,5 ,and 7 days after operation from different parts of the flap.Results The DNA content of fibroblast in the proximal part of the flap was slightly changed, those in the middle portion increased from 3rd to 5th day and became normal at 7th day, and in the distal portion progressively increased after operation. The results suggested that the transitional part of the flap and skin graft in the middle portion was most active in function and metabolism, and well survived, but the distal portion of the graft was poor in surviving and had a long repairing period. These indicated that local tissue hypoxia stimulated proliferation of fibroblasts and synthesis of the DNA in a short time, but as time wert by, the proliferative speed and DNA synthesis in the individual cell were heterogeneous, probably because of the degeneration or necrosis of some epidermal cells in the graft. Conclusion The wideness and length of the pedicle as well as its vascular anastomoses should be readjusted to promote the blood circulation of the distal skin graft tissues.

Objective To evaluate the value of routine head CT scan in diagnosing the fracture of orbital medial wall.Methods 40 cases doubted with the fracture of orbital medial wall were additionally scanned with orbital CT.Results Of 45 cases,35 cases were confirmed with fracture of orbital medial wall.The fracture signs on routine head CT included invagination of orbital medial wall,thick of medial rectus,increase in ethmoid sinus density and intra orbital gas.Conclusion Routine head CT scan can serve as diagnosing or screening the fracture of orbital medial wall.

Despite multimodel chemotherapy after successful surgical cytoreduction for ovarian cancer,disease recurrence continues to be problematic.Therefore,exploring new treatment strategy has already become urgent matter of the moment. Biological targeted therapies have been studied to overcome chemotherapy resistance.The most promising one at this time is bevacizumab.Results from phase Ⅱ and phase Ⅲ trials were excited.Deeper understanding of biologic pathway in ovarian cancer,and more biologic targets undergoing clinical trial will develop a new world for the treatment of ovarian cancer.

Dorsal-ventral axis formation is one of the earliest and the most important steps of patterning formation during early embryogenesis.The molecular basis of dorsoventral axis formation reflects the fundamental issues of orchestrated cell proliferation and differentiation.Wildly speculated since the Renaissance,the effort of deciphering the mechanisms of dorsal-ventral axis formation has contributed significantly to our current understanding of disease pathogenesis.Here,we focused our discussion on the recent discovery of the convergence of dorsal and ventral signaling pathways during early embryogenesis and its implications in cancer biology and beyond.

Objective To observe and compare the recent objective response rate and adverse reaction of docetaxe and irinotecan combined with cisplatin in the treatment of advanced non-small cell lung cancer (NSCLC). Methods Sixty-five patients with advanced NSCLC were randomly divided into goup A consisted of 33 patients received docetaxe plus capecitabine and group B consisted of 32 patients received irinotecan plus capecitabine with a 21-day regimen. Two or more cycles of chemotherapy were completed in each group. Results Sixty-five patients were assessable for efficacy and toxicities. In group A, 2 patients achieved complete response, 13 patients partial response, overall response rate was 45.45 % and the median progression-free survival (PFS) was 10.1 months. In group B, 2 patients achieved complete response, 12 patients partial response, overall response rate was 43.75 %, and the median PFS was 10.2 months. The efficacy and PFS were not significantly different between the two groups(P ＞0.05). The most common adverse reactions were myelosuppression and gastrointestinal response in the two groups. The main adverse reactions is anemia in group A and diarrhoea in group B. Patients in group A experienced more anemia. On the contrary,the rate in group B was more increased. No chemotherapy-related death was observed. Conclusion The effects of docetaxe combined with cisplatin and irinotecan combined with cisplatin in the treatment of advanced NSCLC are comparable and equivalent, and the adverse reactions can be tolerated.

Enterostomy are a common surgical procedure in the treatment of rectal cancer, has more than 100000 each year in our country requires enterostomy patients, whereas patients with postoperative rehabilitation and nursing leave the family caregivers, the study found that with baseline levels of care for people, and increased mortality 63% of caregivers within five years, attaches great importance to the caregivers of patients with life can avoid the occurrence of another patient, at the same time also can improve the quality of family care, reduce the demand for medical and waste. Therefore, this article will from the permanent patients underwent colostomy care burden of family caregivers, health education needs, psychological burden to understand colostomy caregivers are faced with the problem of our country, explore the mental and physical health of the caregivers related factors, provide the basis for effective follow disease intervention.

A part of pathogenetic factors of hypertensionin twenty--seven patients with hypertensive NIDDM (group 1) were observed. The control groupsincluded non-hypertensive NIDDM (group 2, n=46 ), primary hypertension (group 3, n= 15) andhealthy persons (group 4, n= 15). The oral glu-cose tolerance test (OGTT), insulin releasing test(IRT ), atrial natriuretic peptide (ANP), an-giotensin I (ATI), aldosterone (ALD), wholeblood volume and urine protein were measured.The results showed that the plasma insulin andsodium levels and the whole blood volume weresignificantly higher in group 1 than those in con-trol group 2, the ANP level was rather lower than that in control group 4. Although the results werecorresponded with the theory that the circulatinghyperinsulinemia may lead to sodium retention andinhibited an adequate ANP stimulation by sodiumchallenge which turn to hypertension, nonhyper-tensive NIDDM patients (group 2) also have thesame findinge. So the retention of sodium and wa-ter can't be used to explain the mechanism of hy-pertension in NIDDM patients, the other patho-genetic factors especialy the factors related to thehyperinsulinemia such as PGE and PGI need to beinvestigated futher.